Black-Pigweed
Trianthema portulacastrum
Family: Aizoaceae
Black-Pigweed (Trianthema portulacastrum) is a upright plant from the Aizoaceae family.
Complete Care Guide
Light Requirements
Needs several hours of unfiltered sunlight daily. South-facing windowsill or sunroom is ideal.
Watering
Very drought-tolerant. Allow soil to dry completely between waterings. Overwatering is the primary cause of death for this plant.
Typical schedule: every 21 days (adjust for season and environment).
Humidity
Tolerates dry air without issue. No special humidity measures needed — works great in air-conditioned or heated rooms.
Temperature
Keep between 50–85°F (10–29°C). Avoid cold drafts, heating vents, and sudden temperature changes. This plant tolerates cooler temperatures better than most.
Size & Growth
Mature size: approximately 17 inches tall × 9 inches wide. Growth rate is moderate. Habit: upright.
Difficulty Level: 4/5
Above average difficulty. Requires specific conditions (usually humidity and watering precision) and doesn't tolerate neglect well. For experienced plant parents.
Quick Tips
- ✓Water every 21 days
- ✓Prefers direct light
Common Problems & Solutions
Yellowing leaves
Cause: Overwatering or sitting in waterlogged soil
Fix: Let soil dry completely before watering. Ensure pot has drainage holes. Reduce watering frequency.
Pale or leggy growth
Cause: Insufficient light — plant is stretching toward the nearest light source
Fix: Move to a brighter location. Rotate plant quarterly for even growth.
Drooping or wilting
Cause: Usually overwatering causing root rot
Fix: Check roots for rot. Reduce watering. Repot in fresh, well-draining soil if needed.
Pet Safe
Black-Pigweed is non-toxic and safe for households with cats and dogs. Verified against the ASPCA Toxic and Non-Toxic Plant Database.
Frequently Asked Questions
Is Black-Pigweed safe for cats and dogs?▼
Yes! Black-Pigweed is non-toxic to both cats and dogs according to the ASPCA. Safe to keep in homes with pets.
How often should I water Black-Pigweed?▼
Water approximately every 21 days, but always check the soil first. Very drought-tolerant. Allow soil to dry completely between waterings. Overwatering is the primary cause of death for this plant. Adjust frequency based on season — less in winter, more in summer.
How much light does Black-Pigweed need?▼
Black-Pigweed prefers direct sun conditions. Needs several hours of unfiltered sunlight daily. South-facing windowsill or sunroom is ideal.
How big does Black-Pigweed get?▼
Indoors, Black-Pigweed typically reaches about 17 inches (43 cm) tall with a spread of around 9 inches. Growth rate is moderate. Size depends on pot size, light, and care.
Is Black-Pigweed good for beginners?▼
Black-Pigweed has a difficulty rating of 4/5, so it's best for experienced plant parents. It needs more specific conditions to thrive.
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